125 lines
2.5 KiB
Ruby
125 lines
2.5 KiB
Ruby
# frozen_string_literal: true
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module Gitlab
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module Config
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module Entry
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##
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# Base abstract class for each configuration entry node.
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#
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class Node
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InvalidError = Class.new(StandardError)
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attr_reader :config, :metadata
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attr_accessor :key, :parent, :default, :description
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def initialize(config, **metadata)
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@config = config
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@metadata = metadata
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@entries = {}
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yield(self) if block_given?
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self.class.aspects.to_a.each do |aspect|
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instance_exec(&aspect)
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end
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end
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def [](key)
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@entries[key] || Entry::Undefined.new
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end
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def compose!(deps = nil)
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return unless valid?
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yield if block_given?
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end
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def leaf?
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@entries.none?
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end
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def descendants
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@entries.values
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end
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def ancestors
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@parent ? @parent.ancestors + [@parent] : []
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end
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def opt(key)
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opt = metadata[key]
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opt = @parent.opt(key) if opt.nil? && @parent
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opt
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end
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def valid?
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errors.none?
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end
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def errors
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[]
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end
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def value
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if leaf?
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@config
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else
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meaningful = @entries.select do |_key, value|
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value.specified? && value.relevant?
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end
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Hash[meaningful.map { |key, entry| [key, entry.value] }]
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end
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end
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def specified?
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true
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end
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def relevant?
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true
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end
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def location
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name = @key.presence || self.class.name.to_s.demodulize
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.underscore.humanize.downcase
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ancestors.map(&:key).append(name).compact.join(':')
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end
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def inspect
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val = leaf? ? config : descendants
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unspecified = specified? ? '' : '(unspecified) '
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"#<#{self.class.name} #{unspecified}{#{key}: #{val.inspect}}>"
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end
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def hash?
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@config.is_a?(Hash)
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end
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def string?
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@config.is_a?(String)
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end
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def integer?
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@config.is_a?(Integer)
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end
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def self.default(**)
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end
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def self.aspects
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@aspects ||= []
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end
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def self.with_aspect(blk)
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self.aspects.append(blk)
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end
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private
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attr_reader :entries
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end
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end
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end
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end
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